A buffer structure

Abstract

The invention discloses a buffer structure, which belongs to the technical field of shock absorbers, and comprises a first connecting part, a second connecting part and a plurality of elastic plates, wherein one end of the elastic plate is connected to the first connecting part, and the other end is connected to the second connecting part; a plurality of damping sheets form a damping sleeve; one end of a guide rod is fixed on the second connecting part, and the other end is inserted into the damping sleeve; when the elastic plate is compressed, the elastic plate pushes the rotating part to rotate, and the rotating part twists the torsion spring, so that the torsion spring gradually tightens the damping sheet; when the elastic plate is deformed under pressure, the elastic plate provided in the invention can push the rotating part to rotate, and then twist the torsion spring sleeved on the damping sleeve, so that the torsion spring gradually tightens the damping sleeve, increases the sliding friction between the damping sleeve and the guide rod, and realizes the gradual consumption of impact energy in the vibration reduction process; when the elastic plate rebounds, the sliding friction between the damping sleeve and the guide rod gradually decreases, which can reduce the rebound speed of the elastic plate, further improve the buffering effect, and protect the connected components.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, and in particular to a buffer structure. Background Art

[0002] In the field of mechanical engineering and transportation, the application of buffer structures and shock absorbing devices is crucial. These devices are often subject to shock and vibration from the external environment or internal mechanical movement during operation. For example, the carriage of electric vehicles and the battery compartment of some electric vehicles are subject to vibration and shock during use.

[0003] Conventional buffering and shock absorption methods mainly rely on elastic elements such as springs and rubber to absorb and transform impact energy through their elastic deformation. However, these elastic elements often rebound quickly after compression and cannot effectively consume impact energy; some shock absorbers also add damping mechanisms to consume impact energy, but these damping mechanisms are often fixed damping and cannot adjust damping as the vibration amplitude or impact energy changes, resulting in poor buffering effect.

[0004] Therefore, the present invention proposes a buffer structure. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, an object of the present invention is to provide a buffer structure that can increase the consumption of impact force as the impact force increases, thereby providing better buffering.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a buffer structure, comprising:

[0007] A first connecting portion, used to connect to a first working surface;

[0008] A second connecting portion, used for connecting to a second working surface;

[0009] A plurality of elastic plates, each of which is arc-shaped, one end of each of which is connected to the first connecting portion, and the other end of each of which is connected to the second connecting portion;

[0010] A plurality of annularly distributed damping sheets, wherein the plurality of damping sheets form a damping sleeve, and the damping sheets are fixed on a side of the first connecting portion close to the second connecting portion;

[0011] A guide rod, one end of which is fixed to the second connecting portion, and the other end of which is inserted into the damping sleeve;

[0012] A rotating member, the rotating member is rotatably mounted on the guide rod;

[0013] A torsion spring, wherein the torsion spring is sleeved on the damping sleeve, one end of the torsion spring is fixed to the first connecting portion, and the other end is connected to the rotating member;

[0014] When the elastic plate is compressed, the elastic plate pushes the rotating member to rotate, and the rotating member twists the torsion spring, so that the torsion spring gradually tightens the damping plate.

[0015] Preferably, a plurality of limiting grooves are provided on the first connecting portion and the second connecting portion, positioning shafts are provided in the limiting grooves, and limiting portions cooperating with the positioning shafts are provided at both ends of the elastic plate.

[0016] Preferably, the limiting portion is U-shaped, and the limiting portion is clamped on the positioning shaft.

[0017] Preferably, the rotating member comprises:

[0018] A rotating sleeve, the rotating sleeve is rotatably mounted on the guide rod;

[0019] A plurality of toggle parts are evenly distributed on the circumferential side wall of the rotating sleeve, and the plurality of toggle parts correspond to the plurality of elastic plates one by one.

[0020] Preferably, the toggle portion comprises:

[0021] A frame, wherein the frame is fixed on the circumferential surface of the rotating sleeve;

[0022] A roller shaft is rotatably mounted on the frame, parallel to the guide rod and abuts against the convex surface of the elastic plate.

[0023] Preferably, a limiting slide rail is fixed on the rotating sleeve, the limiting slide rail is parallel to the guide column, and one end of the torsion spring close to the second connecting part is slidably arranged in the limiting slide rail.

[0024] Preferably, an inner flange is provided at one end of the rotating sleeve away from the second connecting portion, and a hook portion buckled with the inner flange is provided at one end of the damping sleeve away from the first connecting portion.

[0025] Preferably, the protruding direction of the elastic plate when being compressed is staggered with the guide rod.

[0026] The beneficial effects of the present invention are as follows: when the elastic plate provided in the present invention is deformed under pressure, it can push the rotating part to rotate; when the rotating part rotates, it can twist the torsion spring sleeved on the damping sleeve, so that the torsion spring gradually tightens the damping sleeve, increases the sliding friction between the damping sleeve and the guide rod, and gradually consumes the impact energy during the vibration reduction process; when the elastic plate rebounds, the sliding friction between the damping sleeve and the guide rod gradually decreases, which can reduce the rebound speed of the elastic plate, further improve the buffering effect, and protect the connected components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A three-dimensional diagram of a buffer structure provided in an embodiment of the present invention.

[0029] Figure 2 It is a top view of the present invention.

[0030] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0031] Figure 4 It is a front view of the present invention.

[0032] Figure 5 for Figure 4 Cross-sectional view at BB in the middle.

[0033] Figure 6 It is a schematic diagram of the elastic plate of the present invention pushing the rotating member to rotate when compressed.

[0034] Description of reference numerals:

[0035] 1. First connecting part, 2. Second connecting part, 3. Elastic plate, 4. Damping sleeve, 5. Damping sheet, 6. Guide rod, 7. Torsion spring, 8. Limiting groove, 9. Positioning shaft, 10. Limiting part, 11. Rotating sleeve, 12. Frame, 13. Roller, 14. Convex surface, 15. Concave surface, 16. Limiting slide rail, 17. Inner flange, 18. Hook. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] like Figures 1 to 6As shown, embodiment 1 of the present invention provides a buffer structure, including a first connecting part 1, a second connecting part 2 and six elastic plates 3, the first connecting part 1 and the second connecting part 2 each include a plate body and a connecting sleeve fixed on the plate body, the connecting sleeve on the first connecting part 1 and the connecting sleeve on the second connecting part 2 are respectively used to connect two components that need buffering and shock absorption, such as a frame and a base of the frame, that is, to mitigate the vibration generated by the relative movement of two horizontal working surfaces in the vertical direction.

[0039] like Figure 1 As shown, six limiting grooves 8 are provided on the plate bodies of the first connecting part 1 and the second connecting part 2, and a positioning shaft 9 is fixed in each limiting groove 8. The elastic plate 3 is arc-shaped, and U-shaped limiting parts 10 are fixed at both ends of the elastic plate 3. The limiting part 10 at the upper end of the elastic plate 3 can be clamped on the positioning shaft 9 of the first connecting part 1, and the limiting part 10 at the lower end can be clamped on the positioning shaft 9 of the second connecting part 2. The arc portion of the limiting part 10 is sleeved on the positioning shaft 9. During installation, the opening of the limiting part 10 can be pushed onto the positioning shaft 9, so that the positioning shaft 9 enters the arc portion of the limiting part 10. From Figure 1 It can be seen that the size of the limiting groove 8 is adapted to the limiting portion 10, and the two plate-shaped parts of the limiting portion 10 extend out of the limiting groove 8. The limiting portion 10 can rotate around the positioning axis 9 as the elastic plate 3 bends.

[0040] When the first connection part 1 is impacted and moves toward the second connection part 2, the elastic plate 3 is further bent, and during this process, the impact force is converted into elastic potential energy of the elastic plate 3. When the impact ends, the elastic plate 3 rebounds to reset the first connection part 1. In order to achieve a better buffering effect, the present invention provides a damping mechanism between the first connection part 1 and the second connection part 2, which can consume the impact force during the deformation of the elastic plate 3.

[0041] like Figure 3 As shown, the damping mechanism provided in the present invention includes a damping sleeve 4 fixed on the lower end surface of the first connecting part 1, and the damping sleeve 4 is composed of a plurality of damping plates 5. The damping plates 5 are made of nylon and can be elastically deformed to a small extent. A guide rod 6 is fixed to the upper end surface of the second connecting part 2, and the upper end of the guide rod 6 is inserted into the damping sleeve 4. In this way, when the first connecting part 1 moves toward the second connecting part 2, the damping sleeve 4 moves toward the guide rod 6. When the damping sleeve 4 gradually tightens the guide rod 6, the sliding friction between the damping sleeve 4 and the guide rod 6 is also gradually increased, that is, the damping is gradually increasing. This makes the deformation resistance of the elastic plate 3 in the compression process gradually increase, thereby playing a role in gradually consuming the impact. In the process of the elastic plate 3 rebounding, the damping sleeve 4 gradually relaxes, that is, the damping gradually decreases, so that the elastic potential energy of the elastic plate 3 in the rebound process will also be partially consumed by the damping sleeve 4. The damping of the elastic plate 3 in the initial stage of the rebound is large, which can reduce the rebound speed of the elastic plate 3 in the initial stage of the rebound, and achieve a better buffering effect.

[0042] In order to tighten and loosen the damping sleeve 4, the present invention rotatably mounts a rotating member on the guide rod 6, and the rotating member includes a rotating sleeve 11 sleeved on the guide rod 6, and six toggling parts arranged on the circumferential surface of the rotating sleeve 11. Figure 5 and Figure 6 As shown, the convex surface 14 of the elastic plate 3 faces inward and the concave surface 15 faces outward. When the elastic plate 3 is compressed, the convex deformation direction of the convex surface 14 is staggered from the guide rod 6. In this way, the elastic plate 3 can give a thrust to the corresponding toggle part when deformed, so that the toggle part can drive the rotating sleeve 11 to rotate around the guide rod 6.

[0043] like Figure 1 and Figure 3 As shown, a torsion spring 7 is sleeved on the damping sleeve 4, one end of the torsion spring 7 is fixed on the plate body on the first connecting part 1, and the other end is limited in the limiting slide rail 16 fixedly installed on the rotating member. The limiting slide rail 16 is parallel to the guide rod 6. In this way, when the elastic plate 3 is compressed, the distance between the first connecting part 1 and the second connecting part 2 will be reduced, and since the torsion spring 7 is still in the limiting slide rail 16, the torsion spring 7 will move in the limiting slide rail 16. When the elastic plate 3 pushes the rotating sleeve 11 to rotate, the limiting slide rail 16 on the rotating sleeve 11 can drive one end of the torsion spring 7 to rotate around the axis of the damping sleeve 4, so that the torsion spring 7 is tightened. Since the inner diameter of the torsion spring 7 is slightly larger than the outer diameter of the damping sleeve 4, when the torsion spring 7 is tightened, its inner diameter is reduced, thereby gradually tightly clamping the damping sleeve 4, causing the damping plate 5 to deform and gradually wrap the guide rod 6, so that the sliding friction between the damping plate 5 and the guide rod 6 gradually increases.

[0044] During the process of the elastic plate 3 rebounding and restoring, the torsion spring 7 is also restoring, and the rotating sleeve 11 rotates in the opposite direction under the action of the torsion spring 7, maintaining the abutment relationship between the toggle portion and the convex surface 14 of the elastic plate 3. At the same time, during the process of the torsion spring 7 restoring, the torsion spring 7 gradually relaxes the damping plate 5, so that the sliding friction between the damping plate 5 and the guide rod 6 is gradually reduced.

[0045] Through the above arrangement, when the first connecting part 1 is impacted and moves toward the second connecting part 2, part of the impact force is converted into elastic potential energy of the elastic plate 3, and part of it is converted into sliding friction between the damping sleeve 4 and the guide rod 6 and consumed; when the elastic potential energy of the elastic plate 3 is released, part of the elastic potential energy is also converted into sliding friction between the damping sleeve 4 and the guide rod 6 and consumed, thereby achieving the effect of buffering and shock absorption.

[0046] Embodiment 2:

[0047] On the basis of embodiment one, in order to reduce the friction between the elastic plate 3 and the toggle part and make it easier for the elastic plate 3 to drive the rotating sleeve 11 to rotate through the toggle part, the toggle part designed in the present invention includes a frame 12 fixed on the circumferential surface of the rotating sleeve 11 and a roller 13 rotatably mounted on the frame 12, wherein the roller 13 is parallel to the guide rod 6 and abuts against the convex surface 14 of the elastic plate 3.

[0048] like Figure 5 and Figure 6 As shown, when the elastic plate 3 is deformed, the roller 13 can roll on the convex surface 14 of the elastic plate 3, and the rotating sleeve 11 will also rotate accordingly.

[0049] Embodiment three:

[0050] On the basis of the first and second embodiments, Figure 3 As shown, in order to facilitate assembly and limit the distance between the first connection part 1 and the second connection part 2, the present invention provides an inner flange 17 at the end of the rotating sleeve 11 away from the second connection part 2, and a hook 18 engaged with the inner flange 17 is provided at the end of the damping sleeve 4 away from the first connection part 1. Figure 3 It can be seen that the guide rod 6 is stepped, and one end of the guide rod 6 close to the second connection part 2 passes through the bottom of the rotating sleeve 11 and is fixed on the second connection part 2. The guide rod 6 limits the axial movement of the rotating sleeve 11 on the guide rod 6, but the rotating sleeve 11 can rotate on the guide rod 6. The upper end of the guide rod 6 abuts against the hook 18 of the damping plate 5, so that the hook 18 can only be located between the rotating sleeve 11 and the guide rod 6, and the hook 18 of the damping plate 5 cannot be separated from the rotating sleeve 11. The top of the damping sleeve 4 is fixed to the cylinder below the plate body of the first connection part 1 by gluing or other means.

[0051] Through the above arrangement, the maximum distance between the first connection part 1 and the second connection part 2 is limited, so that the elastic plate 3 can always maintain a deformation state of bending inward.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A buffer structure, characterized in that: include: A first connecting portion (1), used for connecting to a first working surface; A second connecting portion (2), used for connecting to a second working surface; A plurality of elastic plates (3), each of the elastic plates (3) being arc-shaped, one end of each of the elastic plates (3) being connected to the first connecting portion (1), and the other end of each of the elastic plates (3) being connected to the second connecting portion (2); A plurality of damping sheets (5) distributed in an annular shape, wherein the plurality of damping sheets (5) form a damping sleeve (4), and the damping sheets (5) are fixed on a side of the first connecting portion (1) close to the second connecting portion (2); A guide rod (6), one end of the guide rod (6) being fixed to the second connecting portion (2) and the other end of the guide rod (6) being inserted into the damping sleeve (4); A rotating member, the rotating member being rotatably mounted on the guide rod (6); a torsion spring (7), wherein the torsion spring (7) is sleeved on the damping sleeve (4), one end of the torsion spring (7) is fixed on the first connecting portion (1), and the other end is connected to the rotating member; When the elastic plate (3) is compressed, the elastic plate (3) pushes the rotating member to rotate, and the rotating member twists the torsion spring (7), causing the torsion spring (7) to gradually tighten the damping plate (5).

2. A buffer structure according to claim 1, characterized in that: The first connecting portion (1) and the second connecting portion (2) are both provided with a plurality of limiting grooves (8), positioning shafts (9) are arranged in the limiting grooves (8), and both ends of the elastic plate (3) are provided with limiting portions (10) that cooperate with the positioning shafts (9).

3. A buffer structure according to claim 2, characterized in that: The limiting portion (10) is U-shaped, and the limiting portion (10) is sleeved on the positioning shaft (9).

4. A buffer structure according to claim 1, characterized in that: The rotating member comprises: A rotating sleeve (11), wherein the rotating sleeve (11) is rotatably mounted on the guide rod (6); A plurality of toggle parts, the toggle parts being evenly distributed on the circumferential side wall of the rotating sleeve (11), and the plurality of toggle parts corresponding to the plurality of elastic plates (3) one by one.

5. A buffer structure according to claim 4, characterized in that: The toggle portion comprises: A frame (12), wherein the frame (12) is fixed on a circumferential surface of the rotating sleeve (11); A roller shaft (13) is rotatably mounted on the frame (12), the roller shaft (13) is parallel to the guide rod (6) and abuts against the convex surface (14) of the elastic plate (3).

6. A buffer structure according to claim 4, characterized in that: A limit slide rail (16) is fixed on the rotating sleeve (11), the limit slide rail (16) is parallel to the guide column, and one end of the torsion spring (7) close to the second connecting portion (2) is slidably arranged in the limit slide rail (16).

7. A buffer structure according to claim 4, characterized in that: An end of the rotating sleeve (11) away from the second connecting portion (2) is provided with an inner flange (17), and an end of the damping sleeve (4) away from the first connecting portion (1) is provided with a hook portion (18) that is buckled with the inner flange (17).

8. A buffer structure according to claim 1, characterized in that: When the elastic plate (3) is pressed, the protruding direction is offset from the guide rod (6).

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